THE FACT ABOUT SUPER177 THAT NO ONE IS SUGGESTING

I'd personally definitely attempt them. There is certainly not cause that they'd not do the job just fine in your Beeman. I've experienced superior luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin etcetera.). I'd personally attempt a tin and see how your Grizzly likes them as all guns appear to have their most loved pellets.Ge